Ceiling Function
A type of step function. It rounds the input (x) up to the greatest integer .
The ceiling function is a mathematical function that rounds up a real number to the nearest integer that is greater than or equal to it. It is denoted by the symbol ⌈x⌉ or ceil(x) and is read as ceiling of x.
The ceiling function is defined as follows: for any real number x, ceil(x) is the smallest integer that is greater than or equal to x. In other words, if x is an integer, ceil(x) = x, and if x is a non-integer, ceil(x) is the first integer that is greater than x.
For example, the ceiling of 3.2 is 4, the ceiling of -1.5 is -1, and the ceiling of 7 is 7. The ceiling function is often used in computer programming and engineering applications where it is needed to round up values to the next integer.
The ceiling function can be derived using the floor function, which is another mathematical function that rounds down a real number to the nearest integer that is less than or equal to it. Specifically, ceil(x) = -floor(-x).
In conclusion, the ceiling function is a useful mathematical function that rounds up a real number to the next integer, and it is defined as the smallest integer that is greater than or equal to the input number.
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